Adjustable sheave-arm for leers.



No. 708.543. Patentei Sept. 9, |902.

J. GDUDMAN. ADJUSTABLE SHEAVE ARM FOR LEERS.

(Application filed July 5, 1901.) (No Model.)

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JOSEPH GOODMAN, OF PITTSBURG, PENNSYLVANIA.

ADJUSTABLE SHEAVE ARM FOR LEERS.

SPECIFICATION forming part of Letters Patent No. ?08,543, dated September 9, 1902.

i Application filed Jnly 5, 1901. Serial Ne. 67,087. (Ne model.)

I'o ctZl whom it may conccrn:

Be it known that I, JOSEPH GOODMAN, a citizen of' the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Adjustable Sheave-Arms for Leers,of which the following is a specification, reference being had to the accompanying drawings, which form a part of this specification, in which Figure l indicates a longitudinal section of a portion of a leer for annealing plate-glass. Fig. 2 is a horizontal section of the same. Fig. 3 is a side elevation of one of the adjustable sheaves and lover. Fig. 4 is an end View of the same.

My invention relates to mechanisms for holding plate-glass in annealing-leers.

The object of my invention is to provide improved mechanism for raising and loweringthe bed-bars to different horizontal planes and for raising the plate-glass from the pulling-out bars; and to this end the invention comprises rockably-mounted arms having adj ustable members carryingsheaves and adapted to Swing in a vertical plane in the arc of a circle to provide for positioning of the bedbars at different horizontal planes, as desired, and for raising the plate-glass from the pulling-out bars, as set forth in detail hereinafter and recited in the appended claims.

In the drawings, l is along tunnel or leer, in whicha series of horizontally-disposed bars or rods are arranged longitudinally. One set or series of bars 2 are called the pulling-out bars. The other set 3 are the bed-bars,which are mounted upon sheaves 4:, journaled or carried in the outer ends of the adjustable members a of the sheave-arms 5. The sheavearms are clamped securely upon the plurality of transversely-disposed bars 6,'arranged atintervals in the leer and square in cross-section to prevent turning of the sheave-arms thereon. The number of arms corresponds with the number of bed-bars. Each sheave-arm is provided with a curved slot b, into which a pin c projects and to which the inner end of the adjustable member a of the lever is connected, the said adjustable member being pivoted to the arm at the end of the latter, and the said pin working in the slot being provided with a nut, whereby the member a rod d, which may be reciprocated by a suitable lever or other means (not shown) and the rock-bars caused to turn in unison in either direction and the bed-bars thus caused to be elevated or lowered at intervals to remove the glass at intervals from the pullingout bars.

One of the advantages of my invention is that it can be very quickly and easily applied to the square transversely-disposed bars, and when applied it can be readily adjusted, whereby the whole series of levers and bars connected therewith are easily maintained in accurate horizontal alinement.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In an Operating inechanism for leers, a rockably-mounted arm and a member pivoted to the arm and adapted to Swing in the arc of a circle, and means for securing the pivoted member at different points in relation to the arm, after adjustment of the member.

2. In an Operating mechanism for leers, a rockably-mounted arm having an arc-shaped slot, a member pivotally connected to the arm, and a bolt passing through the member and through the slot, whereby the member can be adjusted in the arc of a circle and Secured where positioned.

3. In an Operating mechanism for' leers, the combination with a plurality of bed-bars, and a plurality of pulling-ont bars, of a plurality of r0ckably-mounted arms adapted for supporting the bed-bars and for raising them up and down in relation to the pulling-out bars, and means for rocking the said arms.

4:. In an Operating mechanism for leers, the combination with a plurality of bed-bars and a plurality of pulling-out bars, of a plurality of rockably-mounted arms, means for rocking said arms, and members carryingsheaves ICO which support the bed-bars, said members being adjustably mounted on the arms so that the relative elevation of the bed-bars to the arms may be varied. to the arms and means for rocking the arms. 5. In an Operating mechanism forleers, the In testimony whereof I have hereunto afcombination With a plurality of bed-bars and fixed my signature in the presence of two suba plurality of pulling-out bars, of a plurality scribing witnesses. of rockably-mounted arms having arc-shaped Slots, members pivoted to the arms, sheaves z on the members which support the bed-bars, and bolts passing through the members and through the Slots, whereby the members and sheaves can be swung in the are of a circle and the bed-bars raised or lowered relative JOSEPH GOODMAN. Witnesses:

CLARENCE A. WILLIAMs, JOHN H. RONEY. 

